Bench-type pottery ware jiggering device



R. E'. 'RocK BENCH-TYPE POTTERYWARE JIGGERING DEVICE Filed Jan. 30, 1948 a m E h m w IN VENTOR.

@atented sept. 6 l94 BENGH-Tl PEPOmT-ERY WARE J-IGGERING DEVICE Ralph E. Brock, Cambridge, Ohio Ap'pIicwtionJanuary M, 1948, Serial No. 5,374

.. 3 Claims.- (01. 25.-24)

.1 l -ii'hespresentulnventionlrelates: to certain new and-useful rimprovementsi tin apparatusrand :devicesremployeddon .iiggeringl potteryware; a;.procedurei orrste mlfollowed linmelding and forming dinnerware asuch as ldishes; cups, saucers and .the-

like.

One 'QbieCt. 'of nthew vinvention isstos provide. a motor :drivenusplndler whose: upper end isirex- Pressly made 5toraccommodcite readily applicable andreremovable :heads; the: latter being @fashloned to :accemmodate:.mo1ds iwhich are utilized .to traai-sfornr the clay or a other -plastic material, through the aid of: forniing blades or they like, into desired articles' of dinnerware.

*surervarious styles andtypes of jiggering structures are lm-own =to =those skilled-in the art to which the invention-relates and many-varieties are known to me." Generally --sp'eaking; prior art devices -referred' to*-are irr-t-he automatic category andardfairly elaborate and rather complicated ahd expensive and:usable in large pottery making plants. *What I haveirrmind in theinstant development is a-coniparative1y simple, practical, efficientanweconomical structural device which may beattachedto a work bench or table in a relatively. small pottery. and used With or without handiforming and shaping devices to .turn out p'otteryware of high-gradecharacter.

"Briefly; the preferred embodiment." of the inunit that is suspended from the bench; the lower end'oflthe shafthavin .fl-pulley which is adapted tov be driveirhy motor. and the. upper end. of the shaft 'beingform'ed into an adapter stud to accommodate a readily attashah1ev .and-detachable .iigg'erin'g head. 7

In addition, novelty is predicated. .on a spindle clples of whet-present.inventlonland. illustrating.

vention is'characterizedby a perpendicular shaft forming a spindle, the. lower portion thereof bein'g mounted for"effective rotation. in a bearing or" shaft with means for rota'tably supporting -.2 the. manner-in which the same is mounted: on a table, bench or the like;

Figures 2 and 3.are horizontal sectionson nthe lines 2-"2and 3-3 respectively 'of Figure 1;.looking in the direction of the arrows;

Figure 4: is a bottom plan View which-serves-mo bring out the pulley equipped end of;-the:-shaft.

Referring now to thedrawingsbydistinguishlug reference numerals; the numeral .5 designates the-rotatable spindle or shaftunit. and 5 denotes the bearing equippedisupportingunit: therefor. The headineans, as a unitary part, is denoted by the numeral l.

Starting with. the basic supporting-unit 6, this isadaptedto be bolted-or otherwise removably mounted in a hole 8 provided therefor in awork bench or other relatively fixed support 9. An essential element of ithe'unit G is a cylindrical housing ill for upper and lower roller bearing assemblies 5 l and l5! respectively. The lower bearing assembly lZ: isvmaintainedin the cylindricalhousing byway of a bottomplate ldhaving a. central .apertured portion with :packing rings i l to accommodate: thelowermost-shoulderedportion i5 01" the shaft. That-portion of the shaft which projects. through and-beyond the plate constitutes what may he. designatedcas the spindle in and this is provided with a multiple V-grooved pulley ll which is keyedinplace as at-1B. .A .spacingsleeve i9. is arranged in-the cylindrical housing and interposed between the bearings and is shaped to accommodate; anintermediate. shoulder 2 The shaft has another shoulder 2 i; which engages @the. bearing assembly ;I I and above the shoulder 2 l. the shaft isiormed with a cylindricalhub portion22 and aishoulder formingand assembling flange .23. Acollarafl, having packing rings 25, suri'ounds;.-and=rpr0- vides a suitable bearing for the hub,.and:l-1as abutting relation with the shoulder. forming flange .Infact; said collar has a flange itself 25 which is bolted as at2=l .to anqattaching flange 28 which is in turngboltedto the-benclror table 9. Thus, the flange 23 supports the:housing 8' ini-thegtable and is, situated beneathithe table and provides bearing andsupportina means for the shaft and places the pulley in avDDsi-tion where it may be driven from a-be1t;0perated=;by anelectric motor (not shown), supportedbeneath .the table, The arrangement illustrated embodying the bearing .andflclosure. forming-,pollarrfi and bottomzplate. lsprovides an adequate-support which ,may be amply-lubricated 1- to insure freelrunning of theshaft.

The; upper end p ion of t e-sh ft,-..-the Part which extends beyond the hub, functions to provide an adapter stud 29 for the head unit I. The head comprises a cup 30 with an assembling and attaching neck 3|, said neck having diametrically opposite grooves lined up with similar grooves 32 in the shaft, the first-named grooves being denoted by the numerals 33. The grooves form keyways for keying members 33 and the grooved neck is held on the keys 34 by way of a screw 34 which is threaded into the stud and which is provided with a large head 35 which rests upon the bottom of the cup and serves to reliably maintain the neck and cup in place. The upper end of the cup part of the head is bevelled to provide an annular 'surface 35 which serves to accommodate the mold (not shown) and which is utilized to accommodate the clay or other plastic substance, to give shape to one side thereof and to spin it so that with a separate forming tool, such as a rotating profile, the required shape may be imparted to the work, saucer, plate or whatever else is being, at the time, turned out.

The type of jigger head now most commonly utilized in the trade is screw-threaded and screwed onto the hub structure from which it receives rotation and they ordinarily employ socalled jigger rings. With my head it will be observed that there are no rings to be used and that the head takes the place of the rings. Time and material is saved from this alone and will more than pay for the newer type heads. Also, it is possible to change from one head to another in approximately seven minutes whereas with other types of heads and rings it ordinarily takes several hours to true the head up and get it ready for accurate operational purposes.

Novelty is predicated on the bearing equipped unit 6 detachably mounted on a table or bench and rotatably supporting a shaft with the lower end of the shaft protruding beyond the unit and having a pulley and providing spindle means. The upper end protrudes and provides adapter means for the readily attachable and detachable as well as novel jiggering head 1.

The device shown and described is an instrumentality which is such that the elements and parts are accurately designed for intimate coacting relation, the parts being precision made and susceptible of expeditious assembling, disassembling and therefore providing for ready repairs.

A careful consideration of the foregoing description in conjunction with the invention as illustrated in the drawings will enable the reader to obtain a clear understanding and impression of the alleged features of merit and novelty suflicient to clarify the construction of the invention as hereinafter claimed.

Minor changes in shape, size, materials and rearrangement of parts may be resorted to in actual practice so long as no departure is made from the invention as claimed.

Having described the invention, what is claimed as new is:

1. In a construction of the class described, in combination, a bench having an opening, a housing for bearings comprising a cylinder fitting removably down through said opening and provided with an attaching flange secured to the bench and around the marginal edges of the opening, bearing assemblies fitted removably in said cylinder, an annular plate closing the bottom of the cylinder, a longitudinally shouldered shaft mounted for rotation in said cylinder and having a shouldered lower end portion extending 4 through and beyond the plate and provided with a pulley, the intermediate portion of the shaft being formed into a flanged hub, a bearing collar surrounding the hub and engaging the latter flange, said bearing collar being itself provided with a flange and said flange being removably bolted to the first-named bench flange, the end portion of the shaft, beyond said hub, being fashioned to provide a stud-like adapter for a readily applicable and removable jiggering head. 2. A bench-type potteryware jiggering device of the class shown and described comprising, in combination, a bench provided with a circular opening of prescribed diameter, a housing of cylindrical form passing downwardly through said opening, said housing being provided at its bottom with a spindle-opening and being provided at its open top with an outstanding flange removably fastened on said bench, a shaft, a hub member formed integral with the intermediate portion of the shaft, said hub member being provided on its underside with a shoulder, said hub member being provided with a peripherally arranged outstandin shoulder forming an assembling flange, said flange being of an external diameter equivalent to the internal diameter of said housing and fitting in the upper flanged end portion of said housing, said flange being substantially flush with the flange on said housing, that portion of the shaft depending below said hub member constituting a spindle and having a stop shoulder bearing against the spindle supportin bottom of said housing, bearings in said housing in which the coacting portion of the spindle rotates, a flanged collar forming a bearing for the hub member, the flange on said collar.

resting on and being detachably secured to the flange on said housing, said collar having an internal diameter less than that of the external diameter of the flange on the hub member and engaging said flange in serving to thus assemble the shaft for operation in the housing.

3. A bench-type potteryware jiggering device of the class shown and described comprising, in combination, a bench provided with a circular opening of prescribed diameter, a housing of cylindrical form passing downwardly through said opening, said housing being provided at itsbottom with a spindle opening and being provided at its open top with an outstanding flange removably fastened on said bench, a shaft, a hub member formed integral with the intermediate portion of the shaft, said hub member being provided on. its underside with a shoulder, said hub member being provided with a peripherally arranged'outstanding shoulder forming an assembling flange, said flange being of an external diameter equivalent to the internal diameter of said housing and fitting in the upper flanged end portion of said" housing, said flange being substantially flush with the flange on said housing, that portion of the shaft depending below said hub member constituting a spindle and having a stop shoulder bearing against the spindle supporting bottom of said housing, bearings in'said housing'in which the coacting portion of the spindle rotates, a flanged collar forming a bearing for the hub member, the

flange on said collar resting on and being de tachably secured to the flange on said housing, said collar having an internal diameter less than that of the external diameter ofthe flange on the hub member and engaging said flange in serving to thus assemble the shaft-for operation in the housing, that portion of the shaft projecting above the hub member being fashioned into a stud-like adapter, a jiggering head removably mounted on said adapter and seated against said hub member, the lower end of said spindle terminating just beyond the bottom of said housing and being provided with a pulley.

RALPH E. BROOK.

REFERENCES CITED The following references are of record in the file of this 'patent:

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